[R-sig-ME] error with glmer

paola berchialla berkeley3 at gmail.com
Mon Dec 29 09:19:54 CET 2008

Dear all, I have some troubles in using lme4 package, glmer function.
Here it is the code I am trying to ran unsuccessfully:


The problem is I get the following error message: Error in 
asMethod(object) : matrix is not symmetric [1,2]
Could someone please explain this error to me? I am using R version 2.7.2

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